Finding the Third Proportional to 123,042 and 189,810

Step by Step Solution

1. Step 1: Write the proportion equation
   123,042 : 189,810 = 189,810 : x
2. Step 2: Convert to fraction form
   123,042/189,810 = 189,810/x
3. Step 3: Cross multiply
   123,042x = 189,810 × 189,810
4. Step 4: Simplify right side
   123,042x = 36,027,836,100
5. Step 5: Solve for x
   x = 36,027,836,100/123,042
6. Step 6: Final answer
   x = 292,809.25