Finding the Third Proportional to 428,429.25 and 930,611.25

Step by Step Solution

1. Step 1: Write the proportion equation
   428,429.25 : 930,611.25 = 930,611.25 : x
2. Step 2: Convert to fraction form
   428,429.25/930,611.25 = 930,611.25/x
3. Step 3: Cross multiply
   428,429.25x = 930,611.25 × 930,611.25
4. Step 4: Simplify right side
   428,429.25x = 866,037,298,626.56
5. Step 5: Solve for x
   x = 866,037,298,626.56/428,429.25
6. Step 6: Final answer
   x = 2,021,424.30