Finding the Third Proportional to 21,900,780 and 50,698,890

Step by Step Solution

1. Step 1: Write the proportion equation
   21,900,780 : 50,698,890 = 50,698,890 : x
2. Step 2: Convert to fraction form
   21,900,780/50,698,890 = 50,698,890/x
3. Step 3: Cross multiply
   21,900,780x = 50,698,890 × 50,698,890
4. Step 4: Simplify right side
   21,900,780x = 2,570,377,447,232,100
5. Step 5: Solve for x
   x = 2,570,377,447,232,100/21,900,780
6. Step 6: Final answer
   x = 117,364,653.10