Finding the Third Proportional to 9,186,072 and 21,455,988

Step by Step Solution

1. Step 1: Write the proportion equation
   9,186,072 : 21,455,988 = 21,455,988 : x
2. Step 2: Convert to fraction form
   9,186,072/21,455,988 = 21,455,988/x
3. Step 3: Cross multiply
   9,186,072x = 21,455,988 × 21,455,988
4. Step 4: Simplify right side
   9,186,072x = 460,359,421,056,144
5. Step 5: Solve for x
   x = 460,359,421,056,144/9,186,072
6. Step 6: Final answer
   x = 50,114,937.16