Finding the Third Proportional to 553,834 and 1,210,172

Step by Step Solution

1. Step 1: Write the proportion equation
   553,834 : 1,210,172 = 1,210,172 : x
2. Step 2: Convert to fraction form
   553,834/1,210,172 = 1,210,172/x
3. Step 3: Cross multiply
   553,834x = 1,210,172 × 1,210,172
4. Step 4: Simplify right side
   553,834x = 1,464,516,269,584
5. Step 5: Solve for x
   x = 1,464,516,269,584/553,834
6. Step 6: Final answer
   x = 2,644,323.51