Finding the Third Proportional to 61,472 and 87,060

Step by Step Solution

1. Step 1: Write the proportion equation
   61,472 : 87,060 = 87,060 : x
2. Step 2: Convert to fraction form
   61,472/87,060 = 87,060/x
3. Step 3: Cross multiply
   61,472x = 87,060 × 87,060
4. Step 4: Simplify right side
   61,472x = 7,579,443,600
5. Step 5: Solve for x
   x = 7,579,443,600/61,472
6. Step 6: Final answer
   x = 123,299.12