Finding the Third Proportional to 47,412 and 64,287

Step by Step Solution

1. Step 1: Write the proportion equation
   47,412 : 64,287 = 64,287 : x
2. Step 2: Convert to fraction form
   47,412/64,287 = 64,287/x
3. Step 3: Cross multiply
   47,412x = 64,287 × 64,287
4. Step 4: Simplify right side
   47,412x = 4,132,818,369
5. Step 5: Solve for x
   x = 4,132,818,369/47,412
6. Step 6: Final answer
   x = 87,168.19