Finding the Third Proportional to 13,122,374 and 17,665,221

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122,374 : 17,665,221 = 17,665,221 : x
2. Step 2: Convert to fraction form
   13,122,374/17,665,221 = 17,665,221/x
3. Step 3: Cross multiply
   13,122,374x = 17,665,221 × 17,665,221
4. Step 4: Simplify right side
   13,122,374x = 312,060,032,978,841
5. Step 5: Solve for x
   x = 312,060,032,978,841/13,122,374
6. Step 6: Final answer
   x = 23,780,760.48