Finding the Third Proportional to 65,746.69 and 90,418.78

Step by Step Solution

1. Step 1: Write the proportion equation
   65,746.69 : 90,418.78 = 90,418.78 : x
2. Step 2: Convert to fraction form
   65,746.69/90,418.78 = 90,418.78/x
3. Step 3: Cross multiply
   65,746.69x = 90,418.78 × 90,418.78
4. Step 4: Simplify right side
   65,746.69x = 8,175,556,002.74
5. Step 5: Solve for x
   x = 8,175,556,002.74/65,746.69
6. Step 6: Final answer
   x = 124,349.32