Finding the Third Proportional to 42,687 and 61,492.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,687 : 61,492.50 = 61,492.50 : x
2. Step 2: Convert to fraction form
   42,687/61,492.50 = 61,492.50/x
3. Step 3: Cross multiply
   42,687x = 61,492.50 × 61,492.50
4. Step 4: Simplify right side
   42,687x = 3,781,327,556.25
5. Step 5: Solve for x
   x = 3,781,327,556.25/42,687
6. Step 6: Final answer
   x = 88,582.65