Finding the Third Proportional to 1,865,388 and 4,016,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,388 : 4,016,172 = 4,016,172 : x
2. Step 2: Convert to fraction form
   1,865,388/4,016,172 = 4,016,172/x
3. Step 3: Cross multiply
   1,865,388x = 4,016,172 × 4,016,172
4. Step 4: Simplify right side
   1,865,388x = 16,129,637,533,584
5. Step 5: Solve for x
   x = 16,129,637,533,584/1,865,388
6. Step 6: Final answer
   x = 8,646,800.31