Finding the Third Proportional to 31,407.75 and 42,363

Step by Step Solution

1. Step 1: Write the proportion equation
   31,407.75 : 42,363 = 42,363 : x
2. Step 2: Convert to fraction form
   31,407.75/42,363 = 42,363/x
3. Step 3: Cross multiply
   31,407.75x = 42,363 × 42,363
4. Step 4: Simplify right side
   31,407.75x = 1,794,623,769
5. Step 5: Solve for x
   x = 1,794,623,769/31,407.75
6. Step 6: Final answer
   x = 57,139.52