Finding the Third Proportional to 28,725.75 and 42,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,725.75 : 42,916.50 = 42,916.50 : x
2. Step 2: Convert to fraction form
   28,725.75/42,916.50 = 42,916.50/x
3. Step 3: Cross multiply
   28,725.75x = 42,916.50 × 42,916.50
4. Step 4: Simplify right side
   28,725.75x = 1,841,825,972.25
5. Step 5: Solve for x
   x = 1,841,825,972.25/28,725.75
6. Step 6: Final answer
   x = 64,117.59