Finding the Third Proportional to 30,261,055.50 and 64,930,488

Step by Step Solution

1. Step 1: Write the proportion equation
   30,261,055.50 : 64,930,488 = 64,930,488 : x
2. Step 2: Convert to fraction form
   30,261,055.50/64,930,488 = 64,930,488/x
3. Step 3: Cross multiply
   30,261,055.50x = 64,930,488 × 64,930,488
4. Step 4: Simplify right side
   30,261,055.50x = 4,215,968,271,918,144
5. Step 5: Solve for x
   x = 4,215,968,271,918,144/30,261,055.50
6. Step 6: Final answer
   x = 139,319,934.56