Finding the Third Proportional to 56,178 and 83,772

Step by Step Solution

1. Step 1: Write the proportion equation
   56,178 : 83,772 = 83,772 : x
2. Step 2: Convert to fraction form
   56,178/83,772 = 83,772/x
3. Step 3: Cross multiply
   56,178x = 83,772 × 83,772
4. Step 4: Simplify right side
   56,178x = 7,017,747,984
5. Step 5: Solve for x
   x = 7,017,747,984/56,178
6. Step 6: Final answer
   x = 124,919.86