Finding the Third Proportional to 156,565.50 and 342,669

Step by Step Solution

1. Step 1: Write the proportion equation
   156,565.50 : 342,669 = 342,669 : x
2. Step 2: Convert to fraction form
   156,565.50/342,669 = 342,669/x
3. Step 3: Cross multiply
   156,565.50x = 342,669 × 342,669
4. Step 4: Simplify right side
   156,565.50x = 117,422,043,561
5. Step 5: Solve for x
   x = 117,422,043,561/156,565.50
6. Step 6: Final answer
   x = 749,986.71