Finding the Third Proportional to 306,042 and 656,368.50

Step by Step Solution

1. Step 1: Write the proportion equation
   306,042 : 656,368.50 = 656,368.50 : x
2. Step 2: Convert to fraction form
   306,042/656,368.50 = 656,368.50/x
3. Step 3: Cross multiply
   306,042x = 656,368.50 × 656,368.50
4. Step 4: Simplify right side
   306,042x = 430,819,607,792.25
5. Step 5: Solve for x
   x = 430,819,607,792.25/306,042
6. Step 6: Final answer
   x = 1,407,714.00