Finding the Third Proportional to 9,997,362,128 and 21,499,292,774

Step by Step Solution

1. Step 1: Write the proportion equation
   9,997,362,128 : 21,499,292,774 = 21,499,292,774 : x
2. Step 2: Convert to fraction form
   9,997,362,128/21,499,292,774 = 21,499,292,774/x
3. Step 3: Cross multiply
   9,997,362,128x = 21,499,292,774 × 21,499,292,774
4. Step 4: Simplify right side
   9,997,362,128x = 462,219,589,782,168,600,576
5. Step 5: Solve for x
   x = 462,219,589,782,168,600,576/9,997,362,128
6. Step 6: Final answer
   x = 46,234,154,956.50