Finding the Third Proportional to 306,111.38 and 714,819.38

Step by Step Solution

1. Step 1: Write the proportion equation
   306,111.38 : 714,819.38 = 714,819.38 : x
2. Step 2: Convert to fraction form
   306,111.38/714,819.38 = 714,819.38/x
3. Step 3: Cross multiply
   306,111.38x = 714,819.38 × 714,819.38
4. Step 4: Simplify right side
   306,111.38x = 510,966,738,875.39
5. Step 5: Solve for x
   x = 510,966,738,875.39/306,111.38
6. Step 6: Final answer
   x = 1,669,218.40