Finding the Third Proportional to 10,364,654 and 21,393,178

Step by Step Solution

1. Step 1: Write the proportion equation
   10,364,654 : 21,393,178 = 21,393,178 : x
2. Step 2: Convert to fraction form
   10,364,654/21,393,178 = 21,393,178/x
3. Step 3: Cross multiply
   10,364,654x = 21,393,178 × 21,393,178
4. Step 4: Simplify right side
   10,364,654x = 457,668,064,939,684
5. Step 5: Solve for x
   x = 457,668,064,939,684/10,364,654
6. Step 6: Final answer
   x = 44,156,617.76