Finding the Third Proportional to 42,690.38 and 64,173.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,690.38 : 64,173.38 = 64,173.38 : x
2. Step 2: Convert to fraction form
   42,690.38/64,173.38 = 64,173.38/x
3. Step 3: Cross multiply
   42,690.38x = 64,173.38 × 64,173.38
4. Step 4: Simplify right side
   42,690.38x = 4,118,222,058.89
5. Step 5: Solve for x
   x = 4,118,222,058.89/42,690.38
6. Step 6: Final answer
   x = 96,467.23