Finding the Third Proportional to 60,891.19 and 91,089.28

Step by Step Solution

1. Step 1: Write the proportion equation
   60,891.19 : 91,089.28 = 91,089.28 : x
2. Step 2: Convert to fraction form
   60,891.19/91,089.28 = 91,089.28/x
3. Step 3: Cross multiply
   60,891.19x = 91,089.28 × 91,089.28
4. Step 4: Simplify right side
   60,891.19x = 8,297,257,158.64
5. Step 5: Solve for x
   x = 8,297,257,158.64/60,891.19
6. Step 6: Final answer
   x = 136,263.68