Finding the Third Proportional to 42,679.75 and 61,477.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,679.75 : 61,477.50 = 61,477.50 : x
2. Step 2: Convert to fraction form
   42,679.75/61,477.50 = 61,477.50/x
3. Step 3: Cross multiply
   42,679.75x = 61,477.50 × 61,477.50
4. Step 4: Simplify right side
   42,679.75x = 3,779,483,006.25
5. Step 5: Solve for x
   x = 3,779,483,006.25/42,679.75
6. Step 6: Final answer
   x = 88,554.48