Finding the Third Proportional to 28,991.25 and 63,510.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,991.25 : 63,510.75 = 63,510.75 : x
2. Step 2: Convert to fraction form
   28,991.25/63,510.75 = 63,510.75/x
3. Step 3: Cross multiply
   28,991.25x = 63,510.75 × 63,510.75
4. Step 4: Simplify right side
   28,991.25x = 4,033,615,365.56
5. Step 5: Solve for x
   x = 4,033,615,365.56/28,991.25
6. Step 6: Final answer
   x = 139,132.16