Finding the Third Proportional to 43,290.75 and 69,157.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,290.75 : 69,157.50 = 69,157.50 : x
2. Step 2: Convert to fraction form
   43,290.75/69,157.50 = 69,157.50/x
3. Step 3: Cross multiply
   43,290.75x = 69,157.50 × 69,157.50
4. Step 4: Simplify right side
   43,290.75x = 4,782,759,806.25
5. Step 5: Solve for x
   x = 4,782,759,806.25/43,290.75
6. Step 6: Final answer
   x = 110,479.95