Finding the Third Proportional to 668,431.50 and 1,443,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   668,431.50 : 1,443,412.50 = 1,443,412.50 : x
2. Step 2: Convert to fraction form
   668,431.50/1,443,412.50 = 1,443,412.50/x
3. Step 3: Cross multiply
   668,431.50x = 1,443,412.50 × 1,443,412.50
4. Step 4: Simplify right side
   668,431.50x = 2,083,439,645,156.25
5. Step 5: Solve for x
   x = 2,083,439,645,156.25/668,431.50
6. Step 6: Final answer
   x = 3,116,908.23