Finding the Third Proportional to 521,217 and 1,142,172

Step by Step Solution

1. Step 1: Write the proportion equation
   521,217 : 1,142,172 = 1,142,172 : x
2. Step 2: Convert to fraction form
   521,217/1,142,172 = 1,142,172/x
3. Step 3: Cross multiply
   521,217x = 1,142,172 × 1,142,172
4. Step 4: Simplify right side
   521,217x = 1,304,556,877,584
5. Step 5: Solve for x
   x = 1,304,556,877,584/521,217
6. Step 6: Final answer
   x = 2,502,905.46