Finding the Third Proportional to 64,510 and 141,412

Step by Step Solution

1. Step 1: Write the proportion equation
   64,510 : 141,412 = 141,412 : x
2. Step 2: Convert to fraction form
   64,510/141,412 = 141,412/x
3. Step 3: Cross multiply
   64,510x = 141,412 × 141,412
4. Step 4: Simplify right side
   64,510x = 19,997,353,744
5. Step 5: Solve for x
   x = 19,997,353,744/64,510
6. Step 6: Final answer
   x = 309,988.43