Finding the Third Proportional to 146,002.50 and 316,791

Step by Step Solution

1. Step 1: Write the proportion equation
   146,002.50 : 316,791 = 316,791 : x
2. Step 2: Convert to fraction form
   146,002.50/316,791 = 316,791/x
3. Step 3: Cross multiply
   146,002.50x = 316,791 × 316,791
4. Step 4: Simplify right side
   146,002.50x = 100,356,537,681
5. Step 5: Solve for x
   x = 100,356,537,681/146,002.50
6. Step 6: Final answer
   x = 687,361.78