Finding the Third Proportional to 10,072,149 and 21,580,152

Step by Step Solution

1. Step 1: Write the proportion equation
   10,072,149 : 21,580,152 = 21,580,152 : x
2. Step 2: Convert to fraction form
   10,072,149/21,580,152 = 21,580,152/x
3. Step 3: Cross multiply
   10,072,149x = 21,580,152 × 21,580,152
4. Step 4: Simplify right side
   10,072,149x = 465,702,960,343,104
5. Step 5: Solve for x
   x = 465,702,960,343,104/10,072,149
6. Step 6: Final answer
   x = 46,236,702.85