Finding the Third Proportional to 111,572 and 156,412

Step by Step Solution

1. Step 1: Write the proportion equation
   111,572 : 156,412 = 156,412 : x
2. Step 2: Convert to fraction form
   111,572/156,412 = 156,412/x
3. Step 3: Cross multiply
   111,572x = 156,412 × 156,412
4. Step 4: Simplify right side
   111,572x = 24,464,713,744
5. Step 5: Solve for x
   x = 24,464,713,744/111,572
6. Step 6: Final answer
   x = 219,272.88