Finding the Third Proportional to 970,354.50 and 1,389,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   970,354.50 : 1,389,475.50 = 1,389,475.50 : x
2. Step 2: Convert to fraction form
   970,354.50/1,389,475.50 = 1,389,475.50/x
3. Step 3: Cross multiply
   970,354.50x = 1,389,475.50 × 1,389,475.50
4. Step 4: Simplify right side
   970,354.50x = 1,930,642,165,100.25
5. Step 5: Solve for x
   x = 1,930,642,165,100.25/970,354.50
6. Step 6: Final answer
   x = 1,989,625.61