Finding the Third Proportional to 111,882 and 156,428

Step by Step Solution

1. Step 1: Write the proportion equation
   111,882 : 156,428 = 156,428 : x
2. Step 2: Convert to fraction form
   111,882/156,428 = 156,428/x
3. Step 3: Cross multiply
   111,882x = 156,428 × 156,428
4. Step 4: Simplify right side
   111,882x = 24,469,719,184
5. Step 5: Solve for x
   x = 24,469,719,184/111,882
6. Step 6: Final answer
   x = 218,710.06