Finding the Third Proportional to 42,292 and 61,440

Step by Step Solution

1. Step 1: Write the proportion equation
   42,292 : 61,440 = 61,440 : x
2. Step 2: Convert to fraction form
   42,292/61,440 = 61,440/x
3. Step 3: Cross multiply
   42,292x = 61,440 × 61,440
4. Step 4: Simplify right side
   42,292x = 3,774,873,600
5. Step 5: Solve for x
   x = 3,774,873,600/42,292
6. Step 6: Final answer
   x = 89,257.39