Finding the Third Proportional to 306,109.50 and 714,818

Step by Step Solution

1. Step 1: Write the proportion equation
   306,109.50 : 714,818 = 714,818 : x
2. Step 2: Convert to fraction form
   306,109.50/714,818 = 714,818/x
3. Step 3: Cross multiply
   306,109.50x = 714,818 × 714,818
4. Step 4: Simplify right side
   306,109.50x = 510,964,773,124
5. Step 5: Solve for x
   x = 510,964,773,124/306,109.50
6. Step 6: Final answer
   x = 1,669,222.20