Finding the Third Proportional to 5,090,581 and 7,120,726

Step by Step Solution

1. Step 1: Write the proportion equation
   5,090,581 : 7,120,726 = 7,120,726 : x
2. Step 2: Convert to fraction form
   5,090,581/7,120,726 = 7,120,726/x
3. Step 3: Cross multiply
   5,090,581x = 7,120,726 × 7,120,726
4. Step 4: Simplify right side
   5,090,581x = 50,704,738,767,076
5. Step 5: Solve for x
   x = 50,704,738,767,076/5,090,581
6. Step 6: Final answer
   x = 9,960,501.32