Finding the Third Proportional to 42,152 and 56,382

Step by Step Solution

1. Step 1: Write the proportion equation
   42,152 : 56,382 = 56,382 : x
2. Step 2: Convert to fraction form
   42,152/56,382 = 56,382/x
3. Step 3: Cross multiply
   42,152x = 56,382 × 56,382
4. Step 4: Simplify right side
   42,152x = 3,178,929,924
5. Step 5: Solve for x
   x = 3,178,929,924/42,152
6. Step 6: Final answer
   x = 75,415.87