Finding the Third Proportional to 717,620 and 1,111,158

Step by Step Solution

1. Step 1: Write the proportion equation
   717,620 : 1,111,158 = 1,111,158 : x
2. Step 2: Convert to fraction form
   717,620/1,111,158 = 1,111,158/x
3. Step 3: Cross multiply
   717,620x = 1,111,158 × 1,111,158
4. Step 4: Simplify right side
   717,620x = 1,234,672,100,964
5. Step 5: Solve for x
   x = 1,234,672,100,964/717,620
6. Step 6: Final answer
   x = 1,720,509.60