Finding the Third Proportional to 10,918,677 and 17,126,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,918,677 : 17,126,707.50 = 17,126,707.50 : x
2. Step 2: Convert to fraction form
   10,918,677/17,126,707.50 = 17,126,707.50/x
3. Step 3: Cross multiply
   10,918,677x = 17,126,707.50 × 17,126,707.50
4. Step 4: Simplify right side
   10,918,677x = 293,324,109,790,556.25
5. Step 5: Solve for x
   x = 293,324,109,790,556.25/10,918,677
6. Step 6: Final answer
   x = 26,864,436.95