Finding the Third Proportional to 664,326 and 974,344.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,326 : 974,344.50 = 974,344.50 : x
2. Step 2: Convert to fraction form
   664,326/974,344.50 = 974,344.50/x
3. Step 3: Cross multiply
   664,326x = 974,344.50 × 974,344.50
4. Step 4: Simplify right side
   664,326x = 949,347,204,680.25
5. Step 5: Solve for x
   x = 949,347,204,680.25/664,326
6. Step 6: Final answer
   x = 1,429,038.16