Finding the Third Proportional to 663,433.50 and 1,421,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,433.50 : 1,421,515.50 = 1,421,515.50 : x
2. Step 2: Convert to fraction form
   663,433.50/1,421,515.50 = 1,421,515.50/x
3. Step 3: Cross multiply
   663,433.50x = 1,421,515.50 × 1,421,515.50
4. Step 4: Simplify right side
   663,433.50x = 2,020,706,316,740.25
5. Step 5: Solve for x
   x = 2,020,706,316,740.25/663,433.50
6. Step 6: Final answer
   x = 3,045,830.99