Finding the Third Proportional to 699,136 and 1,489,784

Step by Step Solution

1. Step 1: Write the proportion equation
   699,136 : 1,489,784 = 1,489,784 : x
2. Step 2: Convert to fraction form
   699,136/1,489,784 = 1,489,784/x
3. Step 3: Cross multiply
   699,136x = 1,489,784 × 1,489,784
4. Step 4: Simplify right side
   699,136x = 2,219,456,366,656
5. Step 5: Solve for x
   x = 2,219,456,366,656/699,136
6. Step 6: Final answer
   x = 3,174,570.28