Finding the Third Proportional to 65,199 and 143,070

Step by Step Solution

1. Step 1: Write the proportion equation
   65,199 : 143,070 = 143,070 : x
2. Step 2: Convert to fraction form
   65,199/143,070 = 143,070/x
3. Step 3: Cross multiply
   65,199x = 143,070 × 143,070
4. Step 4: Simplify right side
   65,199x = 20,469,024,900
5. Step 5: Solve for x
   x = 20,469,024,900/65,199
6. Step 6: Final answer
   x = 313,946.91