Finding the Third Proportional to 388,401 and 602,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   388,401 : 602,761.50 = 602,761.50 : x
2. Step 2: Convert to fraction form
   388,401/602,761.50 = 602,761.50/x
3. Step 3: Cross multiply
   388,401x = 602,761.50 × 602,761.50
4. Step 4: Simplify right side
   388,401x = 363,321,425,882.25
5. Step 5: Solve for x
   x = 363,321,425,882.25/388,401
6. Step 6: Final answer
   x = 935,428.66