Finding the Third Proportional to 299,425.50 and 612,822

Step by Step Solution

1. Step 1: Write the proportion equation
   299,425.50 : 612,822 = 612,822 : x
2. Step 2: Convert to fraction form
   299,425.50/612,822 = 612,822/x
3. Step 3: Cross multiply
   299,425.50x = 612,822 × 612,822
4. Step 4: Simplify right side
   299,425.50x = 375,550,803,684
5. Step 5: Solve for x
   x = 375,550,803,684/299,425.50
6. Step 6: Final answer
   x = 1,254,237.88