Finding the Third Proportional to 668,389.50 and 1,005,778.69

Step by Step Solution

1. Step 1: Write the proportion equation
   668,389.50 : 1,005,778.69 = 1,005,778.69 : x
2. Step 2: Convert to fraction form
   668,389.50/1,005,778.69 = 1,005,778.69/x
3. Step 3: Cross multiply
   668,389.50x = 1,005,778.69 × 1,005,778.69
4. Step 4: Simplify right side
   668,389.50x = 1,011,590,768,229.22
5. Step 5: Solve for x
   x = 1,011,590,768,229.22/668,389.50
6. Step 6: Final answer
   x = 1,513,474.95