Finding the Third Proportional to 509,130 and 754,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   509,130 : 754,879.50 = 754,879.50 : x
2. Step 2: Convert to fraction form
   509,130/754,879.50 = 754,879.50/x
3. Step 3: Cross multiply
   509,130x = 754,879.50 × 754,879.50
4. Step 4: Simplify right side
   509,130x = 569,843,059,520.25
5. Step 5: Solve for x
   x = 569,843,059,520.25/509,130
6. Step 6: Final answer
   x = 1,119,248.64