Finding the Third Proportional to 45,685,434 and 99,742,618

Step by Step Solution

1. Step 1: Write the proportion equation
   45,685,434 : 99,742,618 = 99,742,618 : x
2. Step 2: Convert to fraction form
   45,685,434/99,742,618 = 99,742,618/x
3. Step 3: Cross multiply
   45,685,434x = 99,742,618 × 99,742,618
4. Step 4: Simplify right side
   45,685,434x = 9,948,589,845,493,924
5. Step 5: Solve for x
   x = 9,948,589,845,493,924/45,685,434
6. Step 6: Final answer
   x = 217,762,839.80