Finding the Third Proportional to 911,126 and 1,821,172

Step by Step Solution

1. Step 1: Write the proportion equation
   911,126 : 1,821,172 = 1,821,172 : x
2. Step 2: Convert to fraction form
   911,126/1,821,172 = 1,821,172/x
3. Step 3: Cross multiply
   911,126x = 1,821,172 × 1,821,172
4. Step 4: Simplify right side
   911,126x = 3,316,667,453,584
5. Step 5: Solve for x
   x = 3,316,667,453,584/911,126
6. Step 6: Final answer
   x = 3,640,185.28