Finding the Third Proportional to 12,929,778 and 19,359,054

Step by Step Solution

1. Step 1: Write the proportion equation
   12,929,778 : 19,359,054 = 19,359,054 : x
2. Step 2: Convert to fraction form
   12,929,778/19,359,054 = 19,359,054/x
3. Step 3: Cross multiply
   12,929,778x = 19,359,054 × 19,359,054
4. Step 4: Simplify right side
   12,929,778x = 374,772,971,774,916
5. Step 5: Solve for x
   x = 374,772,971,774,916/12,929,778
6. Step 6: Final answer
   x = 28,985,259.59