Finding the Third Proportional to 51,118,603.50 and 77,210,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,118,603.50 : 77,210,131.50 = 77,210,131.50 : x
2. Step 2: Convert to fraction form
   51,118,603.50/77,210,131.50 = 77,210,131.50/x
3. Step 3: Cross multiply
   51,118,603.50x = 77,210,131.50 × 77,210,131.50
4. Step 4: Simplify right side
   51,118,603.50x = 5,961,404,406,247,292
5. Step 5: Solve for x
   x = 5,961,404,406,247,292/51,118,603.50
6. Step 6: Final answer
   x = 116,619,077.95