Finding the Third Proportional to 999,512 and 2,185,432

Step by Step Solution

1. Step 1: Write the proportion equation
   999,512 : 2,185,432 = 2,185,432 : x
2. Step 2: Convert to fraction form
   999,512/2,185,432 = 2,185,432/x
3. Step 3: Cross multiply
   999,512x = 2,185,432 × 2,185,432
4. Step 4: Simplify right side
   999,512x = 4,776,113,026,624
5. Step 5: Solve for x
   x = 4,776,113,026,624/999,512
6. Step 6: Final answer
   x = 4,778,444.91