Finding the Third Proportional to 109,392 and 156,428

Step by Step Solution

1. Step 1: Write the proportion equation
   109,392 : 156,428 = 156,428 : x
2. Step 2: Convert to fraction form
   109,392/156,428 = 156,428/x
3. Step 3: Cross multiply
   109,392x = 156,428 × 156,428
4. Step 4: Simplify right side
   109,392x = 24,469,719,184
5. Step 5: Solve for x
   x = 24,469,719,184/109,392
6. Step 6: Final answer
   x = 223,688.38