Finding the Third Proportional to 85,123,129.50 and 177,039,948.38

Step by Step Solution

1. Step 1: Write the proportion equation
   85,123,129.50 : 177,039,948.38 = 177,039,948.38 : x
2. Step 2: Convert to fraction form
   85,123,129.50/177,039,948.38 = 177,039,948.38/x
3. Step 3: Cross multiply
   85,123,129.50x = 177,039,948.38 × 177,039,948.38
4. Step 4: Simplify right side
   85,123,129.50x = 31,343,143,320,622,664
5. Step 5: Solve for x
   x = 31,343,143,320,622,664/85,123,129.50
6. Step 6: Final answer
   x = 368,209,480.84