Finding the Third Proportional to 1,385,199 and 2,212,911

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,199 : 2,212,911 = 2,212,911 : x
2. Step 2: Convert to fraction form
   1,385,199/2,212,911 = 2,212,911/x
3. Step 3: Cross multiply
   1,385,199x = 2,212,911 × 2,212,911
4. Step 4: Simplify right side
   1,385,199x = 4,896,975,093,921
5. Step 5: Solve for x
   x = 4,896,975,093,921/1,385,199
6. Step 6: Final answer
   x = 3,535,214.14