Finding the Third Proportional to 2,154,908 and 4,688,158

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,908 : 4,688,158 = 4,688,158 : x
2. Step 2: Convert to fraction form
   2,154,908/4,688,158 = 4,688,158/x
3. Step 3: Cross multiply
   2,154,908x = 4,688,158 × 4,688,158
4. Step 4: Simplify right side
   2,154,908x = 21,978,825,432,964
5. Step 5: Solve for x
   x = 21,978,825,432,964/2,154,908
6. Step 6: Final answer
   x = 10,199,426.35