Finding the Third Proportional to 156,398 and 341,478

Step by Step Solution

1. Step 1: Write the proportion equation
   156,398 : 341,478 = 341,478 : x
2. Step 2: Convert to fraction form
   156,398/341,478 = 341,478/x
3. Step 3: Cross multiply
   156,398x = 341,478 × 341,478
4. Step 4: Simplify right side
   156,398x = 116,607,224,484
5. Step 5: Solve for x
   x = 116,607,224,484/156,398
6. Step 6: Final answer
   x = 745,580.02