Finding the Third Proportional to 509,670 and 712,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   509,670 : 712,930.50 = 712,930.50 : x
2. Step 2: Convert to fraction form
   509,670/712,930.50 = 712,930.50/x
3. Step 3: Cross multiply
   509,670x = 712,930.50 × 712,930.50
4. Step 4: Simplify right side
   509,670x = 508,269,897,830.25
5. Step 5: Solve for x
   x = 508,269,897,830.25/509,670
6. Step 6: Final answer
   x = 997,252.92