Finding the Third Proportional to 485,616 and 761,784

Step by Step Solution

1. Step 1: Write the proportion equation
   485,616 : 761,784 = 761,784 : x
2. Step 2: Convert to fraction form
   485,616/761,784 = 761,784/x
3. Step 3: Cross multiply
   485,616x = 761,784 × 761,784
4. Step 4: Simplify right side
   485,616x = 580,314,862,656
5. Step 5: Solve for x
   x = 580,314,862,656/485,616
6. Step 6: Final answer
   x = 1,195,007.71