Finding the Third Proportional to 392,718 and 604,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,718 : 604,522.50 = 604,522.50 : x
2. Step 2: Convert to fraction form
   392,718/604,522.50 = 604,522.50/x
3. Step 3: Cross multiply
   392,718x = 604,522.50 × 604,522.50
4. Step 4: Simplify right side
   392,718x = 365,447,453,006.25
5. Step 5: Solve for x
   x = 365,447,453,006.25/392,718
6. Step 6: Final answer
   x = 930,559.47