Finding the Third Proportional to 42,403.63 and 57,587.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,403.63 : 57,587.63 = 57,587.63 : x
2. Step 2: Convert to fraction form
   42,403.63/57,587.63 = 57,587.63/x
3. Step 3: Cross multiply
   42,403.63x = 57,587.63 × 57,587.63
4. Step 4: Simplify right side
   42,403.63x = 3,316,334,553.14
5. Step 5: Solve for x
   x = 3,316,334,553.14/42,403.63
6. Step 6: Final answer
   x = 78,208.75