Finding the Third Proportional to 28,643.63 and 62,928.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,643.63 : 62,928.56 = 62,928.56 : x
2. Step 2: Convert to fraction form
   28,643.63/62,928.56 = 62,928.56/x
3. Step 3: Cross multiply
   28,643.63x = 62,928.56 × 62,928.56
4. Step 4: Simplify right side
   28,643.63x = 3,960,003,978.32
5. Step 5: Solve for x
   x = 3,960,003,978.32/28,643.63
6. Step 6: Final answer
   x = 138,250.80