Finding the Third Proportional to 5,405,586 and 7,280,964

Step by Step Solution

1. Step 1: Write the proportion equation
   5,405,586 : 7,280,964 = 7,280,964 : x
2. Step 2: Convert to fraction form
   5,405,586/7,280,964 = 7,280,964/x
3. Step 3: Cross multiply
   5,405,586x = 7,280,964 × 7,280,964
4. Step 4: Simplify right side
   5,405,586x = 53,012,436,769,296
5. Step 5: Solve for x
   x = 53,012,436,769,296/5,405,586
6. Step 6: Final answer
   x = 9,806,973.15