Finding the Third Proportional to 89,613,054 and 138,399,786

Step by Step Solution

1. Step 1: Write the proportion equation
   89,613,054 : 138,399,786 = 138,399,786 : x
2. Step 2: Convert to fraction form
   89,613,054/138,399,786 = 138,399,786/x
3. Step 3: Cross multiply
   89,613,054x = 138,399,786 × 138,399,786
4. Step 4: Simplify right side
   89,613,054x = 19,154,500,764,845,796
5. Step 5: Solve for x
   x = 19,154,500,764,845,796/89,613,054
6. Step 6: Final answer
   x = 213,746,769.14