Finding the Third Proportional to 69,445.79 and 103,872.53

Step by Step Solution

1. Step 1: Write the proportion equation
   69,445.79 : 103,872.53 = 103,872.53 : x
2. Step 2: Convert to fraction form
   69,445.79/103,872.53 = 103,872.53/x
3. Step 3: Cross multiply
   69,445.79x = 103,872.53 × 103,872.53
4. Step 4: Simplify right side
   69,445.79x = 10,789,503,154.03
5. Step 5: Solve for x
   x = 10,789,503,154.03/69,445.79
6. Step 6: Final answer
   x = 155,365.83