Finding the Third Proportional to 42,956 and 61,871

Step by Step Solution

1. Step 1: Write the proportion equation
   42,956 : 61,871 = 61,871 : x
2. Step 2: Convert to fraction form
   42,956/61,871 = 61,871/x
3. Step 3: Cross multiply
   42,956x = 61,871 × 61,871
4. Step 4: Simplify right side
   42,956x = 3,828,020,641
5. Step 5: Solve for x
   x = 3,828,020,641/42,956
6. Step 6: Final answer
   x = 89,114.92