Finding the Third Proportional to 21,018,390 and 45,278,076

Step by Step Solution

1. Step 1: Write the proportion equation
   21,018,390 : 45,278,076 = 45,278,076 : x
2. Step 2: Convert to fraction form
   21,018,390/45,278,076 = 45,278,076/x
3. Step 3: Cross multiply
   21,018,390x = 45,278,076 × 45,278,076
4. Step 4: Simplify right side
   21,018,390x = 2,050,104,166,261,776
5. Step 5: Solve for x
   x = 2,050,104,166,261,776/21,018,390
6. Step 6: Final answer
   x = 97,538,591.98