Finding the Third Proportional to 9,777,126 and 21,045,240

Step by Step Solution

1. Step 1: Write the proportion equation
   9,777,126 : 21,045,240 = 21,045,240 : x
2. Step 2: Convert to fraction form
   9,777,126/21,045,240 = 21,045,240/x
3. Step 3: Cross multiply
   9,777,126x = 21,045,240 × 21,045,240
4. Step 4: Simplify right side
   9,777,126x = 442,902,126,657,600
5. Step 5: Solve for x
   x = 442,902,126,657,600/9,777,126
6. Step 6: Final answer
   x = 45,299,828.05