Finding the Third Proportional to 188,149.50 and 402,057

Step by Step Solution

1. Step 1: Write the proportion equation
   188,149.50 : 402,057 = 402,057 : x
2. Step 2: Convert to fraction form
   188,149.50/402,057 = 402,057/x
3. Step 3: Cross multiply
   188,149.50x = 402,057 × 402,057
4. Step 4: Simplify right side
   188,149.50x = 161,649,831,249
5. Step 5: Solve for x
   x = 161,649,831,249/188,149.50
6. Step 6: Final answer
   x = 859,156.32