Finding the Third Proportional to 12,894,142 and 19,290,153

Step by Step Solution

1. Step 1: Write the proportion equation
   12,894,142 : 19,290,153 = 19,290,153 : x
2. Step 2: Convert to fraction form
   12,894,142/19,290,153 = 19,290,153/x
3. Step 3: Cross multiply
   12,894,142x = 19,290,153 × 19,290,153
4. Step 4: Simplify right side
   12,894,142x = 372,110,002,763,409
5. Step 5: Solve for x
   x = 372,110,002,763,409/12,894,142
6. Step 6: Final answer
   x = 28,858,841.69