Finding the Third Proportional to 12,976,130 and 18,971,139

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976,130 : 18,971,139 = 18,971,139 : x
2. Step 2: Convert to fraction form
   12,976,130/18,971,139 = 18,971,139/x
3. Step 3: Cross multiply
   12,976,130x = 18,971,139 × 18,971,139
4. Step 4: Simplify right side
   12,976,130x = 359,904,114,957,321
5. Step 5: Solve for x
   x = 359,904,114,957,321/12,976,130
6. Step 6: Final answer
   x = 27,735,859.22