Finding the Third Proportional to 64,820.25 and 139,482

Step by Step Solution

1. Step 1: Write the proportion equation
   64,820.25 : 139,482 = 139,482 : x
2. Step 2: Convert to fraction form
   64,820.25/139,482 = 139,482/x
3. Step 3: Cross multiply
   64,820.25x = 139,482 × 139,482
4. Step 4: Simplify right side
   64,820.25x = 19,455,228,324
5. Step 5: Solve for x
   x = 19,455,228,324/64,820.25
6. Step 6: Final answer
   x = 300,141.21