Finding the Third Proportional to 12,988,116 and 28,189,476

Step by Step Solution

1. Step 1: Write the proportion equation
   12,988,116 : 28,189,476 = 28,189,476 : x
2. Step 2: Convert to fraction form
   12,988,116/28,189,476 = 28,189,476/x
3. Step 3: Cross multiply
   12,988,116x = 28,189,476 × 28,189,476
4. Step 4: Simplify right side
   12,988,116x = 794,646,557,154,576
5. Step 5: Solve for x
   x = 794,646,557,154,576/12,988,116
6. Step 6: Final answer
   x = 61,182,588.54