Finding the Third Proportional to 71,776,609 and 111,355,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,776,609 : 111,355,611.50 = 111,355,611.50 : x
2. Step 2: Convert to fraction form
   71,776,609/111,355,611.50 = 111,355,611.50/x
3. Step 3: Cross multiply
   71,776,609x = 111,355,611.50 × 111,355,611.50
4. Step 4: Simplify right side
   71,776,609x = 12,400,072,212,538,932
5. Step 5: Solve for x
   x = 12,400,072,212,538,932/71,776,609
6. Step 6: Final answer
   x = 172,759,237.10