Finding the Third Proportional to 909,131 and 1,912,222

Step by Step Solution

1. Step 1: Write the proportion equation
   909,131 : 1,912,222 = 1,912,222 : x
2. Step 2: Convert to fraction form
   909,131/1,912,222 = 1,912,222/x
3. Step 3: Cross multiply
   909,131x = 1,912,222 × 1,912,222
4. Step 4: Simplify right side
   909,131x = 3,656,592,977,284
5. Step 5: Solve for x
   x = 3,656,592,977,284/909,131
6. Step 6: Final answer
   x = 4,022,074.90