Finding the Third Proportional to 552,390 and 1,210,174

Step by Step Solution

1. Step 1: Write the proportion equation
   552,390 : 1,210,174 = 1,210,174 : x
2. Step 2: Convert to fraction form
   552,390/1,210,174 = 1,210,174/x
3. Step 3: Cross multiply
   552,390x = 1,210,174 × 1,210,174
4. Step 4: Simplify right side
   552,390x = 1,464,521,110,276
5. Step 5: Solve for x
   x = 1,464,521,110,276/552,390
6. Step 6: Final answer
   x = 2,651,244.79