Finding the Third Proportional to 56,878.50 and 83,859

Step by Step Solution

1. Step 1: Write the proportion equation
   56,878.50 : 83,859 = 83,859 : x
2. Step 2: Convert to fraction form
   56,878.50/83,859 = 83,859/x
3. Step 3: Cross multiply
   56,878.50x = 83,859 × 83,859
4. Step 4: Simplify right side
   56,878.50x = 7,032,331,881
5. Step 5: Solve for x
   x = 7,032,331,881/56,878.50
6. Step 6: Final answer
   x = 123,637.79