Finding the Third Proportional to 86,787.50 and 190,220

Step by Step Solution

1. Step 1: Write the proportion equation
   86,787.50 : 190,220 = 190,220 : x
2. Step 2: Convert to fraction form
   86,787.50/190,220 = 190,220/x
3. Step 3: Cross multiply
   86,787.50x = 190,220 × 190,220
4. Step 4: Simplify right side
   86,787.50x = 36,183,648,400
5. Step 5: Solve for x
   x = 36,183,648,400/86,787.50
6. Step 6: Final answer
   x = 416,922.35