Finding the Third Proportional to 64,722 and 141,156

Step by Step Solution

1. Step 1: Write the proportion equation
   64,722 : 141,156 = 141,156 : x
2. Step 2: Convert to fraction form
   64,722/141,156 = 141,156/x
3. Step 3: Cross multiply
   64,722x = 141,156 × 141,156
4. Step 4: Simplify right side
   64,722x = 19,925,016,336
5. Step 5: Solve for x
   x = 19,925,016,336/64,722
6. Step 6: Final answer
   x = 307,855.39