Finding the Third Proportional to 122,454.28 and 189,142.59

Step by Step Solution

1. Step 1: Write the proportion equation
   122,454.28 : 189,142.59 = 189,142.59 : x
2. Step 2: Convert to fraction form
   122,454.28/189,142.59 = 189,142.59/x
3. Step 3: Cross multiply
   122,454.28x = 189,142.59 × 189,142.59
4. Step 4: Simplify right side
   122,454.28x = 35,774,920,770.48
5. Step 5: Solve for x
   x = 35,774,920,770.48/122,454.28
6. Step 6: Final answer
   x = 292,149.20