Finding the Third Proportional to 12,905,196 and 19,808,970

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905,196 : 19,808,970 = 19,808,970 : x
2. Step 2: Convert to fraction form
   12,905,196/19,808,970 = 19,808,970/x
3. Step 3: Cross multiply
   12,905,196x = 19,808,970 × 19,808,970
4. Step 4: Simplify right side
   12,905,196x = 392,395,292,460,900
5. Step 5: Solve for x
   x = 392,395,292,460,900/12,905,196
6. Step 6: Final answer
   x = 30,405,992.47