Finding the Third Proportional to 459,085.50 and 698,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   459,085.50 : 698,791.50 = 698,791.50 : x
2. Step 2: Convert to fraction form
   459,085.50/698,791.50 = 698,791.50/x
3. Step 3: Cross multiply
   459,085.50x = 698,791.50 × 698,791.50
4. Step 4: Simplify right side
   459,085.50x = 488,309,560,472.25
5. Step 5: Solve for x
   x = 488,309,560,472.25/459,085.50
6. Step 6: Final answer
   x = 1,063,657.12