Finding the Third Proportional to 343,147.50 and 517,422

Step by Step Solution

1. Step 1: Write the proportion equation
   343,147.50 : 517,422 = 517,422 : x
2. Step 2: Convert to fraction form
   343,147.50/517,422 = 517,422/x
3. Step 3: Cross multiply
   343,147.50x = 517,422 × 517,422
4. Step 4: Simplify right side
   343,147.50x = 267,725,526,084
5. Step 5: Solve for x
   x = 267,725,526,084/343,147.50
6. Step 6: Final answer
   x = 780,205.38