Finding the Third Proportional to 59,984 and 87,672

Step by Step Solution

1. Step 1: Write the proportion equation
   59,984 : 87,672 = 87,672 : x
2. Step 2: Convert to fraction form
   59,984/87,672 = 87,672/x
3. Step 3: Cross multiply
   59,984x = 87,672 × 87,672
4. Step 4: Simplify right side
   59,984x = 7,686,379,584
5. Step 5: Solve for x
   x = 7,686,379,584/59,984
6. Step 6: Final answer
   x = 128,140.50