Finding the Third Proportional to 13,128,998 and 21,094,784

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128,998 : 21,094,784 = 21,094,784 : x
2. Step 2: Convert to fraction form
   13,128,998/21,094,784 = 21,094,784/x
3. Step 3: Cross multiply
   13,128,998x = 21,094,784 × 21,094,784
4. Step 4: Simplify right side
   13,128,998x = 444,989,912,006,656
5. Step 5: Solve for x
   x = 444,989,912,006,656/13,128,998
6. Step 6: Final answer
   x = 33,893,668.96