Finding the Third Proportional to 85,246.50 and 187,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,246.50 : 187,111.50 = 187,111.50 : x
2. Step 2: Convert to fraction form
   85,246.50/187,111.50 = 187,111.50/x
3. Step 3: Cross multiply
   85,246.50x = 187,111.50 × 187,111.50
4. Step 4: Simplify right side
   85,246.50x = 35,010,713,432.25
5. Step 5: Solve for x
   x = 35,010,713,432.25/85,246.50
6. Step 6: Final answer
   x = 410,699.72