Finding the Third Proportional to 678,003 and 920,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   678,003 : 920,812.50 = 920,812.50 : x
2. Step 2: Convert to fraction form
   678,003/920,812.50 = 920,812.50/x
3. Step 3: Cross multiply
   678,003x = 920,812.50 × 920,812.50
4. Step 4: Simplify right side
   678,003x = 847,895,660,156.25
5. Step 5: Solve for x
   x = 847,895,660,156.25/678,003
6. Step 6: Final answer
   x = 1,250,578.04