Finding the Third Proportional to 8,139,402 and 12,956,310

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,402 : 12,956,310 = 12,956,310 : x
2. Step 2: Convert to fraction form
   8,139,402/12,956,310 = 12,956,310/x
3. Step 3: Cross multiply
   8,139,402x = 12,956,310 × 12,956,310
4. Step 4: Simplify right side
   8,139,402x = 167,865,968,816,100
5. Step 5: Solve for x
   x = 167,865,968,816,100/8,139,402
6. Step 6: Final answer
   x = 20,623,870.01