Finding the Third Proportional to 516,069 and 781,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   516,069 : 781,879.50 = 781,879.50 : x
2. Step 2: Convert to fraction form
   516,069/781,879.50 = 781,879.50/x
3. Step 3: Cross multiply
   516,069x = 781,879.50 × 781,879.50
4. Step 4: Simplify right side
   516,069x = 611,335,552,520.25
5. Step 5: Solve for x
   x = 611,335,552,520.25/516,069
6. Step 6: Final answer
   x = 1,184,600.42