Finding the Third Proportional to 156,428 and 340,792

Step by Step Solution

1. Step 1: Write the proportion equation
   156,428 : 340,792 = 340,792 : x
2. Step 2: Convert to fraction form
   156,428/340,792 = 340,792/x
3. Step 3: Cross multiply
   156,428x = 340,792 × 340,792
4. Step 4: Simplify right side
   156,428x = 116,139,187,264
5. Step 5: Solve for x
   x = 116,139,187,264/156,428
6. Step 6: Final answer
   x = 742,445.01