Finding the Third Proportional to 5,090,566 and 7,120,706

Step by Step Solution

1. Step 1: Write the proportion equation
   5,090,566 : 7,120,706 = 7,120,706 : x
2. Step 2: Convert to fraction form
   5,090,566/7,120,706 = 7,120,706/x
3. Step 3: Cross multiply
   5,090,566x = 7,120,706 × 7,120,706
4. Step 4: Simplify right side
   5,090,566x = 50,704,453,938,436
5. Step 5: Solve for x
   x = 50,704,453,938,436/5,090,566
6. Step 6: Final answer
   x = 9,960,474.72