Finding the Third Proportional to 5,136,174 and 7,688,222

Step by Step Solution

1. Step 1: Write the proportion equation
   5,136,174 : 7,688,222 = 7,688,222 : x
2. Step 2: Convert to fraction form
   5,136,174/7,688,222 = 7,688,222/x
3. Step 3: Cross multiply
   5,136,174x = 7,688,222 × 7,688,222
4. Step 4: Simplify right side
   5,136,174x = 59,108,757,521,284
5. Step 5: Solve for x
   x = 59,108,757,521,284/5,136,174
6. Step 6: Final answer
   x = 11,508,324.59