Finding the Third Proportional to 1,345,290 and 2,870,180

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345,290 : 2,870,180 = 2,870,180 : x
2. Step 2: Convert to fraction form
   1,345,290/2,870,180 = 2,870,180/x
3. Step 3: Cross multiply
   1,345,290x = 2,870,180 × 2,870,180
4. Step 4: Simplify right side
   1,345,290x = 8,237,933,232,400
5. Step 5: Solve for x
   x = 8,237,933,232,400/1,345,290
6. Step 6: Final answer
   x = 6,123,537.11