Finding the Third Proportional to 359,151.50 and 781,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,151.50 : 781,360.50 = 781,360.50 : x
2. Step 2: Convert to fraction form
   359,151.50/781,360.50 = 781,360.50/x
3. Step 3: Cross multiply
   359,151.50x = 781,360.50 × 781,360.50
4. Step 4: Simplify right side
   359,151.50x = 610,524,230,960.25
5. Step 5: Solve for x
   x = 610,524,230,960.25/359,151.50
6. Step 6: Final answer
   x = 1,699,907.23