Finding the Third Proportional to 86,311.69 and 188,312.06

Step by Step Solution

1. Step 1: Write the proportion equation
   86,311.69 : 188,312.06 = 188,312.06 : x
2. Step 2: Convert to fraction form
   86,311.69/188,312.06 = 188,312.06/x
3. Step 3: Cross multiply
   86,311.69x = 188,312.06 × 188,312.06
4. Step 4: Simplify right side
   86,311.69x = 35,461,432,883.00
5. Step 5: Solve for x
   x = 35,461,432,883.00/86,311.69
6. Step 6: Final answer
   x = 410,853.20