Finding the Third Proportional to 50,528 and 78,456

Step by Step Solution

1. Step 1: Write the proportion equation
   50,528 : 78,456 = 78,456 : x
2. Step 2: Convert to fraction form
   50,528/78,456 = 78,456/x
3. Step 3: Cross multiply
   50,528x = 78,456 × 78,456
4. Step 4: Simplify right side
   50,528x = 6,155,343,936
5. Step 5: Solve for x
   x = 6,155,343,936/50,528
6. Step 6: Final answer
   x = 121,820.45