Finding the Third Proportional to 42,387 and 64,127

Step by Step Solution

1. Step 1: Write the proportion equation
   42,387 : 64,127 = 64,127 : x
2. Step 2: Convert to fraction form
   42,387/64,127 = 64,127/x
3. Step 3: Cross multiply
   42,387x = 64,127 × 64,127
4. Step 4: Simplify right side
   42,387x = 4,112,272,129
5. Step 5: Solve for x
   x = 4,112,272,129/42,387
6. Step 6: Final answer
   x = 97,017.30