Finding the Third Proportional to 42,690.75 and 61,675.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,690.75 : 61,675.50 = 61,675.50 : x
2. Step 2: Convert to fraction form
   42,690.75/61,675.50 = 61,675.50/x
3. Step 3: Cross multiply
   42,690.75x = 61,675.50 × 61,675.50
4. Step 4: Simplify right side
   42,690.75x = 3,803,867,300.25
5. Step 5: Solve for x
   x = 3,803,867,300.25/42,690.75
6. Step 6: Final answer
   x = 89,102.85