Finding the Third Proportional to 13,309,396 and 19,875,390

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309,396 : 19,875,390 = 19,875,390 : x
2. Step 2: Convert to fraction form
   13,309,396/19,875,390 = 19,875,390/x
3. Step 3: Cross multiply
   13,309,396x = 19,875,390 × 19,875,390
4. Step 4: Simplify right side
   13,309,396x = 395,031,127,652,100
5. Step 5: Solve for x
   x = 395,031,127,652,100/13,309,396
6. Step 6: Final answer
   x = 29,680,620.19