Finding the Third Proportional to 156,748 and 343,540

Step by Step Solution

1. Step 1: Write the proportion equation
   156,748 : 343,540 = 343,540 : x
2. Step 2: Convert to fraction form
   156,748/343,540 = 343,540/x
3. Step 3: Cross multiply
   156,748x = 343,540 × 343,540
4. Step 4: Simplify right side
   156,748x = 118,019,731,600
5. Step 5: Solve for x
   x = 118,019,731,600/156,748
6. Step 6: Final answer
   x = 752,926.55