Finding the Third Proportional to 21,876,390 and 47,689,164

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876,390 : 47,689,164 = 47,689,164 : x
2. Step 2: Convert to fraction form
   21,876,390/47,689,164 = 47,689,164/x
3. Step 3: Cross multiply
   21,876,390x = 47,689,164 × 47,689,164
4. Step 4: Simplify right side
   21,876,390x = 2,274,256,363,018,896
5. Step 5: Solve for x
   x = 2,274,256,363,018,896/21,876,390
6. Step 6: Final answer
   x = 103,959,399.29