Finding the Third Proportional to 508,599 and 747,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   508,599 : 747,328.50 = 747,328.50 : x
2. Step 2: Convert to fraction form
   508,599/747,328.50 = 747,328.50/x
3. Step 3: Cross multiply
   508,599x = 747,328.50 × 747,328.50
4. Step 4: Simplify right side
   508,599x = 558,499,886,912.25
5. Step 5: Solve for x
   x = 558,499,886,912.25/508,599
6. Step 6: Final answer
   x = 1,098,114.40