Finding the Third Proportional to 9,155,844,952 and 19,636,449,320

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155,844,952 : 19,636,449,320 = 19,636,449,320 : x
2. Step 2: Convert to fraction form
   9,155,844,952/19,636,449,320 = 19,636,449,320/x
3. Step 3: Cross multiply
   9,155,844,952x = 19,636,449,320 × 19,636,449,320
4. Step 4: Simplify right side
   9,155,844,952x = 385,590,141,896,928,460,800
5. Step 5: Solve for x
   x = 385,590,141,896,928,460,800/9,155,844,952
6. Step 6: Final answer
   x = 42,114,096,942.27