Finding the Third Proportional to 66,789 and 103,443.75

Step by Step Solution

1. Step 1: Write the proportion equation
   66,789 : 103,443.75 = 103,443.75 : x
2. Step 2: Convert to fraction form
   66,789/103,443.75 = 103,443.75/x
3. Step 3: Cross multiply
   66,789x = 103,443.75 × 103,443.75
4. Step 4: Simplify right side
   66,789x = 10,700,609,414.06
5. Step 5: Solve for x
   x = 10,700,609,414.06/66,789
6. Step 6: Final answer
   x = 160,215.15