Finding the Third Proportional to 86,052.50 and 186,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,052.50 : 186,402.50 = 186,402.50 : x
2. Step 2: Convert to fraction form
   86,052.50/186,402.50 = 186,402.50/x
3. Step 3: Cross multiply
   86,052.50x = 186,402.50 × 186,402.50
4. Step 4: Simplify right side
   86,052.50x = 34,745,892,006.25
5. Step 5: Solve for x
   x = 34,745,892,006.25/86,052.50
6. Step 6: Final answer
   x = 403,775.51