Finding the Third Proportional to 368,496 and 781,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,496 : 781,279.50 = 781,279.50 : x
2. Step 2: Convert to fraction form
   368,496/781,279.50 = 781,279.50/x
3. Step 3: Cross multiply
   368,496x = 781,279.50 × 781,279.50
4. Step 4: Simplify right side
   368,496x = 610,397,657,120.25
5. Step 5: Solve for x
   x = 610,397,657,120.25/368,496
6. Step 6: Final answer
   x = 1,656,456.67