Finding the Third Proportional to 980,398.69 and 2,123,605.69

Step by Step Solution

1. Step 1: Write the proportion equation
   980,398.69 : 2,123,605.69 = 2,123,605.69 : x
2. Step 2: Convert to fraction form
   980,398.69/2,123,605.69 = 2,123,605.69/x
3. Step 3: Cross multiply
   980,398.69x = 2,123,605.69 × 2,123,605.69
4. Step 4: Simplify right side
   980,398.69x = 4,509,701,115,982.35
5. Step 5: Solve for x
   x = 4,509,701,115,982.35/980,398.69
6. Step 6: Final answer
   x = 4,599,864.50