Finding the Third Proportional to 402,258.50 and 596,430

Step by Step Solution

1. Step 1: Write the proportion equation
   402,258.50 : 596,430 = 596,430 : x
2. Step 2: Convert to fraction form
   402,258.50/596,430 = 596,430/x
3. Step 3: Cross multiply
   402,258.50x = 596,430 × 596,430
4. Step 4: Simplify right side
   402,258.50x = 355,728,744,900
5. Step 5: Solve for x
   x = 355,728,744,900/402,258.50
6. Step 6: Final answer
   x = 884,328.72