Finding the Third Proportional to 99,888,738,232 and 205,072,869,471.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,888,738,232 : 205,072,869,471.50 = 205,072,869,471.50 : x
2. Step 2: Convert to fraction form
   99,888,738,232/205,072,869,471.50 = 205,072,869,471.50/x
3. Step 3: Cross multiply
   99,888,738,232x = 205,072,869,471.50 × 205,072,869,471.50
4. Step 4: Simplify right side
   99,888,738,232x = 42,054,881,793,274,873,380,864
5. Step 5: Solve for x
   x = 42,054,881,793,274,873,380,864/99,888,738,232
6. Step 6: Final answer
   x = 421,017,249,167.76