Finding the Third Proportional to 724,300 and 1,146,639

Step by Step Solution

1. Step 1: Write the proportion equation
   724,300 : 1,146,639 = 1,146,639 : x
2. Step 2: Convert to fraction form
   724,300/1,146,639 = 1,146,639/x
3. Step 3: Cross multiply
   724,300x = 1,146,639 × 1,146,639
4. Step 4: Simplify right side
   724,300x = 1,314,780,996,321
5. Step 5: Solve for x
   x = 1,314,780,996,321/724,300
6. Step 6: Final answer
   x = 1,815,243.68