Finding the Third Proportional to 1,788,109 and 3,878,972

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788,109 : 3,878,972 = 3,878,972 : x
2. Step 2: Convert to fraction form
   1,788,109/3,878,972 = 3,878,972/x
3. Step 3: Cross multiply
   1,788,109x = 3,878,972 × 3,878,972
4. Step 4: Simplify right side
   1,788,109x = 15,046,423,776,784
5. Step 5: Solve for x
   x = 15,046,423,776,784/1,788,109
6. Step 6: Final answer
   x = 8,414,712.85