Finding the Third Proportional to 1,905,172 and 4,109,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905,172 : 4,109,478 = 4,109,478 : x
2. Step 2: Convert to fraction form
   1,905,172/4,109,478 = 4,109,478/x
3. Step 3: Cross multiply
   1,905,172x = 4,109,478 × 4,109,478
4. Step 4: Simplify right side
   1,905,172x = 16,887,809,432,484
5. Step 5: Solve for x
   x = 16,887,809,432,484/1,905,172
6. Step 6: Final answer
   x = 8,864,191.49