Finding the Third Proportional to 812,560 and 1,880,820

Step by Step Solution

1. Step 1: Write the proportion equation
   812,560 : 1,880,820 = 1,880,820 : x
2. Step 2: Convert to fraction form
   812,560/1,880,820 = 1,880,820/x
3. Step 3: Cross multiply
   812,560x = 1,880,820 × 1,880,820
4. Step 4: Simplify right side
   812,560x = 3,537,483,872,400
5. Step 5: Solve for x
   x = 3,537,483,872,400/812,560
6. Step 6: Final answer
   x = 4,353,504.81