Finding the Third Proportional to 64,820 and 134,140

Step by Step Solution

1. Step 1: Write the proportion equation
   64,820 : 134,140 = 134,140 : x
2. Step 2: Convert to fraction form
   64,820/134,140 = 134,140/x
3. Step 3: Cross multiply
   64,820x = 134,140 × 134,140
4. Step 4: Simplify right side
   64,820x = 17,993,539,600
5. Step 5: Solve for x
   x = 17,993,539,600/64,820
6. Step 6: Final answer
   x = 277,592.40