Finding the Third Proportional to 392,553 and 604,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,553 : 604,111.50 = 604,111.50 : x
2. Step 2: Convert to fraction form
   392,553/604,111.50 = 604,111.50/x
3. Step 3: Cross multiply
   392,553x = 604,111.50 × 604,111.50
4. Step 4: Simplify right side
   392,553x = 364,950,704,432.25
5. Step 5: Solve for x
   x = 364,950,704,432.25/392,553
6. Step 6: Final answer
   x = 929,685.17