Finding the Third Proportional to 8,865,804 and 19,390,488

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865,804 : 19,390,488 = 19,390,488 : x
2. Step 2: Convert to fraction form
   8,865,804/19,390,488 = 19,390,488/x
3. Step 3: Cross multiply
   8,865,804x = 19,390,488 × 19,390,488
4. Step 4: Simplify right side
   8,865,804x = 375,991,024,878,144
5. Step 5: Solve for x
   x = 375,991,024,878,144/8,865,804
6. Step 6: Final answer
   x = 42,409,128.93