Finding the Third Proportional to 8,423,099 and 12,938,910

Step by Step Solution

1. Step 1: Write the proportion equation
   8,423,099 : 12,938,910 = 12,938,910 : x
2. Step 2: Convert to fraction form
   8,423,099/12,938,910 = 12,938,910/x
3. Step 3: Cross multiply
   8,423,099x = 12,938,910 × 12,938,910
4. Step 4: Simplify right side
   8,423,099x = 167,415,391,988,100
5. Step 5: Solve for x
   x = 167,415,391,988,100/8,423,099
6. Step 6: Final answer
   x = 19,875,747.87