Finding the Third Proportional to 28,156.78 and 42,151.64

Step by Step Solution

1. Step 1: Write the proportion equation
   28,156.78 : 42,151.64 = 42,151.64 : x
2. Step 2: Convert to fraction form
   28,156.78/42,151.64 = 42,151.64/x
3. Step 3: Cross multiply
   28,156.78x = 42,151.64 × 42,151.64
4. Step 4: Simplify right side
   28,156.78x = 1,776,760,807.38
5. Step 5: Solve for x
   x = 1,776,760,807.38/28,156.78
6. Step 6: Final answer
   x = 63,102.41