Finding the Third Proportional to 710,390 and 1,521,868

Step by Step Solution

1. Step 1: Write the proportion equation
   710,390 : 1,521,868 = 1,521,868 : x
2. Step 2: Convert to fraction form
   710,390/1,521,868 = 1,521,868/x
3. Step 3: Cross multiply
   710,390x = 1,521,868 × 1,521,868
4. Step 4: Simplify right side
   710,390x = 2,316,082,209,424
5. Step 5: Solve for x
   x = 2,316,082,209,424/710,390
6. Step 6: Final answer
   x = 3,260,296.75