Finding the Third Proportional to 770,420 and 1,856,010

Step by Step Solution

1. Step 1: Write the proportion equation
   770,420 : 1,856,010 = 1,856,010 : x
2. Step 2: Convert to fraction form
   770,420/1,856,010 = 1,856,010/x
3. Step 3: Cross multiply
   770,420x = 1,856,010 × 1,856,010
4. Step 4: Simplify right side
   770,420x = 3,444,773,120,100
5. Step 5: Solve for x
   x = 3,444,773,120,100/770,420
6. Step 6: Final answer
   x = 4,471,292.44