Finding the Third Proportional to 7,013,138 and 9,503,640

Step by Step Solution

1. Step 1: Write the proportion equation
   7,013,138 : 9,503,640 = 9,503,640 : x
2. Step 2: Convert to fraction form
   7,013,138/9,503,640 = 9,503,640/x
3. Step 3: Cross multiply
   7,013,138x = 9,503,640 × 9,503,640
4. Step 4: Simplify right side
   7,013,138x = 90,319,173,249,600
5. Step 5: Solve for x
   x = 90,319,173,249,600/7,013,138
6. Step 6: Final answer
   x = 12,878,567.80