Finding the Third Proportional to 67,860.28 and 99,817.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67,860.28 : 99,817.31 = 99,817.31 : x
2. Step 2: Convert to fraction form
   67,860.28/99,817.31 = 99,817.31/x
3. Step 3: Cross multiply
   67,860.28x = 99,817.31 × 99,817.31
4. Step 4: Simplify right side
   67,860.28x = 9,963,495,874.72
5. Step 5: Solve for x
   x = 9,963,495,874.72/67,860.28
6. Step 6: Final answer
   x = 146,823.67