Finding the Third Proportional to 717,618 and 1,111,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   717,618 : 1,111,156.50 = 1,111,156.50 : x
2. Step 2: Convert to fraction form
   717,618/1,111,156.50 = 1,111,156.50/x
3. Step 3: Cross multiply
   717,618x = 1,111,156.50 × 1,111,156.50
4. Step 4: Simplify right side
   717,618x = 1,234,668,767,492.25
5. Step 5: Solve for x
   x = 1,234,668,767,492.25/717,618
6. Step 6: Final answer
   x = 1,720,509.75