Finding the Third Proportional to 5,912,739 and 12,748,389

Step by Step Solution

1. Step 1: Write the proportion equation
   5,912,739 : 12,748,389 = 12,748,389 : x
2. Step 2: Convert to fraction form
   5,912,739/12,748,389 = 12,748,389/x
3. Step 3: Cross multiply
   5,912,739x = 12,748,389 × 12,748,389
4. Step 4: Simplify right side
   5,912,739x = 162,521,422,095,321
5. Step 5: Solve for x
   x = 162,521,422,095,321/5,912,739
6. Step 6: Final answer
   x = 27,486,655.86