Finding the Third Proportional to 10,087,290 and 21,889,260

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087,290 : 21,889,260 = 21,889,260 : x
2. Step 2: Convert to fraction form
   10,087,290/21,889,260 = 21,889,260/x
3. Step 3: Cross multiply
   10,087,290x = 21,889,260 × 21,889,260
4. Step 4: Simplify right side
   10,087,290x = 479,139,703,347,600
5. Step 5: Solve for x
   x = 479,139,703,347,600/10,087,290
6. Step 6: Final answer
   x = 47,499,348.52