Finding the Third Proportional to 12,278,142 and 20,462,323.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,278,142 : 20,462,323.50 = 20,462,323.50 : x
2. Step 2: Convert to fraction form
   12,278,142/20,462,323.50 = 20,462,323.50/x
3. Step 3: Cross multiply
   12,278,142x = 20,462,323.50 × 20,462,323.50
4. Step 4: Simplify right side
   12,278,142x = 418,706,683,018,652.25
5. Step 5: Solve for x
   x = 418,706,683,018,652.25/12,278,142
6. Step 6: Final answer
   x = 34,101,795.13