Finding the Third Proportional to 49,389.75 and 60,772.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,389.75 : 60,772.78 = 60,772.78 : x
2. Step 2: Convert to fraction form
   49,389.75/60,772.78 = 60,772.78/x
3. Step 3: Cross multiply
   49,389.75x = 60,772.78 × 60,772.78
4. Step 4: Simplify right side
   49,389.75x = 3,693,330,940.86
5. Step 5: Solve for x
   x = 3,693,330,940.86/49,389.75
6. Step 6: Final answer
   x = 74,779.30