Finding the Third Proportional to 69,300.56 and 90,623.81

Step by Step Solution

1. Step 1: Write the proportion equation
   69,300.56 : 90,623.81 = 90,623.81 : x
2. Step 2: Convert to fraction form
   69,300.56/90,623.81 = 90,623.81/x
3. Step 3: Cross multiply
   69,300.56x = 90,623.81 × 90,623.81
4. Step 4: Simplify right side
   69,300.56x = 8,212,675,392.04
5. Step 5: Solve for x
   x = 8,212,675,392.04/69,300.56
6. Step 6: Final answer
   x = 118,508.06