Finding the Third Proportional to 999,510 and 2,185,428

Step by Step Solution

1. Step 1: Write the proportion equation
   999,510 : 2,185,428 = 2,185,428 : x
2. Step 2: Convert to fraction form
   999,510/2,185,428 = 2,185,428/x
3. Step 3: Cross multiply
   999,510x = 2,185,428 × 2,185,428
4. Step 4: Simplify right side
   999,510x = 4,776,095,543,184
5. Step 5: Solve for x
   x = 4,776,095,543,184/999,510
6. Step 6: Final answer
   x = 4,778,436.98