Finding the Third Proportional to 89,488,680 and 138,189,204

Step by Step Solution

1. Step 1: Write the proportion equation
   89,488,680 : 138,189,204 = 138,189,204 : x
2. Step 2: Convert to fraction form
   89,488,680/138,189,204 = 138,189,204/x
3. Step 3: Cross multiply
   89,488,680x = 138,189,204 × 138,189,204
4. Step 4: Simplify right side
   89,488,680x = 19,096,256,102,153,616
5. Step 5: Solve for x
   x = 19,096,256,102,153,616/89,488,680
6. Step 6: Final answer
   x = 213,392,980.01