Finding the Third Proportional to 27,820.50 and 61,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   27,820.50 : 61,861.50 = 61,861.50 : x
2. Step 2: Convert to fraction form
   27,820.50/61,861.50 = 61,861.50/x
3. Step 3: Cross multiply
   27,820.50x = 61,861.50 × 61,861.50
4. Step 4: Simplify right side
   27,820.50x = 3,826,845,182.25
5. Step 5: Solve for x
   x = 3,826,845,182.25/27,820.50
6. Step 6: Final answer
   x = 137,554.87