Finding the Third Proportional to 1,878,185 and 2,806,220

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878,185 : 2,806,220 = 2,806,220 : x
2. Step 2: Convert to fraction form
   1,878,185/2,806,220 = 2,806,220/x
3. Step 3: Cross multiply
   1,878,185x = 2,806,220 × 2,806,220
4. Step 4: Simplify right side
   1,878,185x = 7,874,870,688,400
5. Step 5: Solve for x
   x = 7,874,870,688,400/1,878,185
6. Step 6: Final answer
   x = 4,192,808.85