Finding the Third Proportional to 28,663.50 and 43,428.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,663.50 : 43,428.75 = 43,428.75 : x
2. Step 2: Convert to fraction form
   28,663.50/43,428.75 = 43,428.75/x
3. Step 3: Cross multiply
   28,663.50x = 43,428.75 × 43,428.75
4. Step 4: Simplify right side
   28,663.50x = 1,886,056,326.56
5. Step 5: Solve for x
   x = 1,886,056,326.56/28,663.50
6. Step 6: Final answer
   x = 65,799.93