Finding the Third Proportional to 28,619.13 and 42,071.38

Step by Step Solution

1. Step 1: Write the proportion equation
   28,619.13 : 42,071.38 = 42,071.38 : x
2. Step 2: Convert to fraction form
   28,619.13/42,071.38 = 42,071.38/x
3. Step 3: Cross multiply
   28,619.13x = 42,071.38 × 42,071.38
4. Step 4: Simplify right side
   28,619.13x = 1,770,000,594.39
5. Step 5: Solve for x
   x = 1,770,000,594.39/28,619.13
6. Step 6: Final answer
   x = 61,846.78