Finding the Third Proportional to 666,338 and 974,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,338 : 974,515.50 = 974,515.50 : x
2. Step 2: Convert to fraction form
   666,338/974,515.50 = 974,515.50/x
3. Step 3: Cross multiply
   666,338x = 974,515.50 × 974,515.50
4. Step 4: Simplify right side
   666,338x = 949,680,459,740.25
5. Step 5: Solve for x
   x = 949,680,459,740.25/666,338
6. Step 6: Final answer
   x = 1,425,223.32