Finding the Third Proportional to 142,510 and 307,862

Step by Step Solution

1. Step 1: Write the proportion equation
   142,510 : 307,862 = 307,862 : x
2. Step 2: Convert to fraction form
   142,510/307,862 = 307,862/x
3. Step 3: Cross multiply
   142,510x = 307,862 × 307,862
4. Step 4: Simplify right side
   142,510x = 94,779,011,044
5. Step 5: Solve for x
   x = 94,779,011,044/142,510
6. Step 6: Final answer
   x = 665,069.20