Finding the Third Proportional to 28,725.38 and 42,915.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,725.38 : 42,915.75 = 42,915.75 : x
2. Step 2: Convert to fraction form
   28,725.38/42,915.75 = 42,915.75/x
3. Step 3: Cross multiply
   28,725.38x = 42,915.75 × 42,915.75
4. Step 4: Simplify right side
   28,725.38x = 1,841,761,598.06
5. Step 5: Solve for x
   x = 1,841,761,598.06/28,725.38
6. Step 6: Final answer
   x = 64,116.19