Finding the Third Proportional to 56,820.75 and 86,961

Step by Step Solution

1. Step 1: Write the proportion equation
   56,820.75 : 86,961 = 86,961 : x
2. Step 2: Convert to fraction form
   56,820.75/86,961 = 86,961/x
3. Step 3: Cross multiply
   56,820.75x = 86,961 × 86,961
4. Step 4: Simplify right side
   56,820.75x = 7,562,215,521
5. Step 5: Solve for x
   x = 7,562,215,521/56,820.75
6. Step 6: Final answer
   x = 133,088.98