Finding the Third Proportional to 56,322 and 78,742

Step by Step Solution

1. Step 1: Write the proportion equation
   56,322 : 78,742 = 78,742 : x
2. Step 2: Convert to fraction form
   56,322/78,742 = 78,742/x
3. Step 3: Cross multiply
   56,322x = 78,742 × 78,742
4. Step 4: Simplify right side
   56,322x = 6,200,302,564
5. Step 5: Solve for x
   x = 6,200,302,564/56,322
6. Step 6: Final answer
   x = 110,086.69