Finding the Third Proportional to 458,784 and 991,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,784 : 991,390.50 = 991,390.50 : x
2. Step 2: Convert to fraction form
   458,784/991,390.50 = 991,390.50/x
3. Step 3: Cross multiply
   458,784x = 991,390.50 × 991,390.50
4. Step 4: Simplify right side
   458,784x = 982,855,123,490.25
5. Step 5: Solve for x
   x = 982,855,123,490.25/458,784
6. Step 6: Final answer
   x = 2,142,304.71