Finding the Third Proportional to 12,926,472 and 20,042,940

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926,472 : 20,042,940 = 20,042,940 : x
2. Step 2: Convert to fraction form
   12,926,472/20,042,940 = 20,042,940/x
3. Step 3: Cross multiply
   12,926,472x = 20,042,940 × 20,042,940
4. Step 4: Simplify right side
   12,926,472x = 401,719,443,843,600
5. Step 5: Solve for x
   x = 401,719,443,843,600/12,926,472
6. Step 6: Final answer
   x = 31,077,268.71