Finding the Third Proportional to 309,096 and 651,960

Step by Step Solution

1. Step 1: Write the proportion equation
   309,096 : 651,960 = 651,960 : x
2. Step 2: Convert to fraction form
   309,096/651,960 = 651,960/x
3. Step 3: Cross multiply
   309,096x = 651,960 × 651,960
4. Step 4: Simplify right side
   309,096x = 425,051,841,600
5. Step 5: Solve for x
   x = 425,051,841,600/309,096
6. Step 6: Final answer
   x = 1,375,145.07